I have a bendix 555. It's not nearly as good as using a shortwave
antenna (like a Wellbrook with sufficient wire) and shortwave radio.
The filtering in these RDFs isn't so hot. The target market was marine
IIRC.
These are quite common flea market items. FWIW, the Bendix 555 had the
best null out of the units we tried. Other others were a Ray-Jeff and
some other model I don't recall.
There are ferrite based loops such as sold by Quantum, MFJ, etc., that
you can use with a shortwave radio.
Krackula wrote:
> some of these maritime RDF units are probably an excellent and
> economical RDF unit for those lowfer air beacons ......
>
> herze one that looked pretty nice ........
>
http://cgi.ebay.com/ebaymotors/NewMar-Digital-Direction-Finder_W0QQitemZ4610800122QQcategoryZ26444QQrdZ1QQcmdZViewItem
>
> they don't show up in the sw listening NGs or the receiver searches
> on ebay .. so they usually remain a bargain. think some have a
> motor drive on the rotational antenna on top and adjusts it's self
> automatically as you move around ........ keeping the direction set !
>
> might be good for BCB listening as well !
>
> just a thought ........
